 /* tr td:last-child{
    background-color: skyblue;
} */
/* tr td :nth-child(3){
    background-color: skyblue;
} */
/* tr td:nth-of-type(3n){
    background-color: skyblue;
} */
/* tr :nth-last-of-type(3){
    background-color: skyblue;
} */
